Mechanism for the conversion of reciprocating into rotary motion.



G. GASSADY & C. F. MBNDHAM.

MECHANISM FOR THE CONVERSION OF RBCIPROGATING INTO ROTARY MOTION.

v I APPLICATION FILED 001228, 1912. 1,132,1fis1, PatentedManlS, 1915.

A & b a h? g a h I l Q Ti? e .dttorny.

I were sitar-ans rarnnr GFFECE,

GEORGE CASSADY, OF NEW WESTMINSTER, BRITISH COLUMBIA, CANADA,

- CONRAD FIELD MENDHAIVI, OF LONDON, ENGLANIX MECHANISM FOR THE CONVERSION OF RECIPROCAIING INTO ROTAB Y MOTION.

To all whomc't may concern:

Be it known that we, Gnoncn CASSADY, a subject of theKing of Great Britain and Ireland, residing atNew Westminster, Brit ish Columbia, Canada, and CONRAD FIELD Mn'NDnAM, a subject of the King of Great Britain and Ireland, residing at 85 Grace churchstreet, London, E. G, England, have invented certain new and useful Improvemerits Relating to Mechanism for the Conversion of Reciprocating into Rotary Motion, of which the following /is a specification.

This invention "relates to mechanism for,

the conversion of reciprocating into rotary auction.

The invention relates particularly to mechanism such asdescribed in the specifiand transmission mechanism "economy and eificiency. y 7 According to the invention one memberv A (which-when applied to a motor'is the cation of the prior Patent No. 991699 granted to George Cassadyn and has for its object to provide mechanism of simple construction, adapted to withstand the strains imposed upon it and efli'ciently to transmit motive power, and to provide mechanism c apable of adaptation to fiuid pressure engines, internal combustion engines, air com-- pressors and pumps, by which a low center of ravity of the motor and transmission mec anism may be secured anda high piston speed,'and generally-to provide a-inotor operating with driven member of the'mechanism) is provided as a rotating body havmg an open .gro'ove or slot, while the other or driving member is provided'as a slide carrying a central boss or lug upon which are mounted the contact blocks which run within the open groove or slot in the rotating body, so thatthus onthe reciprocation of the piston rods of the motor a thrust is imparted in succession to the driven member through the o contact blocks whereby it is rotated; While whenjthe mechanismis applied to a pump, the rotation of the rotating member e'liects the reciprocation in succession of the pump pistons,

The inventiomis illustrated, by way of example, in the accon'ipanying drawings in its application to a steam engine of the construction described in the specification of Specification of Letters Patent.

'tageously' at an angle of 45.

Letters Patent N 0. 991699 granted to George Cassady. a

The drawings show an engine provided with three double-acting cylinders a disposed at equal distances around and parallel with the driven shaft 6. i

Figure l representsl a sectional side elevation of the engine. Fig. 2 represents a transverse sectional view taken on theiline A A of Fig. 1, in the direction of the driven member. v

In carrying the invention-into effect as indicated in the accompanyingdrawings the driven member 0 is provided as a cylindrical body having an open groove 'or slot 0 disposed in a plane inclined to its axisadvanv The said groove or slot has its facesfiat and disposed in parallel planes. The said body may conveniently be formed of two cylinders, one being of a diameter corresponding tothe greater diameter of the body, and; the other beingof diameter corresponding to the diameter of the body at the bottom of the groove or 's'lot..' Each of the-c linders'may be bored to fit the driven shaiit Z; and'may be cut into two parts in a plane corresponding to the plane in which the groove orslot of the larger cylinder are separated to re 'ceive the smaller cylinder between them.

In mounting. the parts of the driven, mem- Patented Mar. ra -1e15,- 1 Application filed October 28, 1912. Serial No. 728,141.

ber upon the shaft Z2 they are secured against rotation thereon by a feather d or key and held together in any suitable manner. As shown inhthe drawings, a collar Z) may be provided on the shaft 1), which is it is to receive the driven member, and the parts of the driven member are clamped against the collar 32 by means of a nut e or nuts screwed upon the end of the portion of the shaft ofincreased diameter which is threaded for the purpose,'and the nut suitably pinned, Alternatively the parts of the driven member may be secured together bymade of slightly increased diameter Where groove or slot 0 and to'oontact respectively with the side facesthereof.

,. in a guide 72, disposed .,fect the rotation of the driven member and rotary member having an obliquely-disposed open slot or groove, said groove or slot having its faces flat and disposed in parallel planes, said contact blocks engaging in said slot or groove. The head 'or 3. Mechanism for the transmission of moshde h of each piston rod 9 18 formed to sllde tion or for the conversion of reciprocating Q parallel with the shaft into rotary motion comprising a driving and b and suitably secured to the framing or rectilineally reciprocating member, a head casing 7 ofthe englne, and is provided Wlth member fixedly mounted on said driving re-. an nwardly proyecting central boss or lug ciprocating member, said head member beh adapted tocarry a spindle is to receive 'ing provided with a projecting lug, a spindle the contact blocks 71 WhlCll spindle 1S pinned mounted in said lug, contact blocks rotatably or otherwise secured in the central boss or mounted on {said spindle, and a rotary driven member having an obliquely disposed open slot or groove, said groove or slot havtaken up. Each ofthe gistonrods get its outer extremity is provi ed with a head or slide it to carry ther'otatable contact blocks 71, which are adapted tobe received into the %Ihe blocks 11 are formed of cylindrical shape with the one end face disposed at an angle-to the axis corresponding to the angle. of the open groove or slot, and with theother end face recessed to permit the blocks to be fitted rotatably upon the spindle is and to bear upon the side faces of the central boss or lug. Ball bearings may, however, beinterposedbetween the face of each block and the central boss or lug. It is of'im-U portance that the distance between the axis of the spindle and the axis of the piston rod should be a minimum.

It will be understood that, in the operation of the engine, on the reciprocation of the piston rods the thrust exerted in succes sion through the contact blocks serves to of:

pl'aiies, said contact blocks engaging in said slot or groove, so as to efiect the rotation of the driven member. v

4. Mechanism for the transmission of motion comprising a rectilineally reciprocating member, a head member fixedly mounted on said reciprocating member, said head member being provided with a projecting lug, a spindle mounted in said lug, contact blocks rotatably mounted on said spindle, and a rotary member having an obliquely'disposed open slot or groove, ing its faces fiat and disposed in parallel planes, said contact blocks engaging in sai slot or groove, and means for taking up wearion the-{faces of the open slot or groove of the rotarymember.

5. Mechanism for the transmission of motion orjfor the conversion of reciprocating of the shaft, the contact blocks-[meanwhile turning upon their respective spindles and so as continuously to maintain their bearing faces in contact" with the side faces of the into rotary motion comprising a driving and groove'or'slot c. A thrust beaning Z may rectilineally reciprocating, member, a head be provided adjacent the end of the driven member fixedlyainounted on said driving remember, and the whole of the transmission ciprocating member, said head member being mechanism is inclosed within a casing that provided with a projecting lug, a spindle may thus serve conveniently as an oil bath. mounted in said lug, contact blocks rotatably What We claim as our invention and demounted on said spindle, and a rotary driven sire to secure by Letters Patent is member having an obliquely disposed open 1. Mechanism for the transmission of moslot or groove, said slot or groove having its tion, or for theconversion of'reciprocating faces flat and disposed in parallel planes, into'rotary motion, consisting of a rotating said contact blocks engaging in said slot or body or driven member having an open groove, so as to effect the rotation of the driven member, and means for taking up groove or slot therein, said groove or slot havingits- -f-aces flat and disposed in paral- Wear on the faces of the open slot or groove of the rotary member.

lel planes, and a rectilineally reciprocating member or slide carrying a central boss or 6. Mechanism for the transmission of molug upon which are mounted the contact tion comprisin a reciprocating member, a blocks which'rotate on their axes and run head member xedly mounted on said rewithin the open groove'or slotin the rotatciprocating member, said head member being body or driven member, for operation ing provided with a projecting lug, a spindle in the manner for the purposes and submounted'in said lug, contact blocks rotatably stanfially a described mounted on said spindle, and a rotary mem- 2.- Mechanism for the transmission of mo ber having an obliquely-disposed open slot tion comprising a rectilineally reciprocating or groove, said contact blocks engaging in member, a head member fixedly'm'ounted on said reciprocating member,.sa id head member being provided with a projecting lug, a spindle mounted in' said lug, contact blocks rotatably mounted on said spindle, and a I the end thrust of the rotary member. I

7. Mechanism for thetransmlss on of mogtion or for the conversionof reciprocating into rotary motion comprising a driving resaid groove or slot hav-- said slot org'roo've, and means for taking up means];

ciprooating member, a head member fixedly mounted on said driving rec1procat1ng member, said head member being provided with a projecting lug, a spindle mounted in.

head member fixedly mounted on said reciprocating member, said head member being provided with a projecting lug, a spindle mounted in said lug, contactblocks rotatably' mounted on said spindle, and a rotary member having an obliquely-disposed open slot or groove, said contact blocks engaging in said slot or groove, means for taking up wear on the faces of the open slot or groove ofithe rotary member and means for taking up the end thrust of the rotary member.

,9. Mechanism for the transmission of motion or for the conversion of reciprocating into rotary motion comprising a driving reciproca-ting member, a head member fixedly .mounted on said driving reciprocating member, said head member being provided with a projecting lug, a spindle mounted in said lug, contact blocks rotatably mounted on said spindle, and a rotary driven member having an obliquely disposed open slot or groove, said contact blocks engaging in said slot orgroove, so as to effect the rotation 01' the driven member, means for taking up wear on the faces of the open slot or groove of the rotary member and means for taking up the end thrust of the rotary member.

In testimony whereof we have respectively hereunto signed our names to this specificationin the presence of two subscribing Wi IIGSSGS.

GEORGE CASSADY. Witnesses R. A. BARBER) LIONEL Ennns'r Bnssnr.

CONRAD FIELD MENDHAM. Witnesses:

ROBERT OWEN HUGHES, J LIONEL ERNEST Bosses". 

